Method of making body-loops for carriages



(No Model.)

' S. E. BROWN.

METHOD OF MAKING BODY LOOPS FOR GARRIAGES. Patented Sept. 25, 1888.

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SAMUEL n. BROWN, or CLEVELAND, OHIO.

METHOD OF MAKING BODY=LOOPS FOR CARRIAGES.

SPECIFICATION forming part of Letters Patent No. 390,112. dated September 25, 1888.

Application filed May 3, 1887.

Serial No. 236,944. (No model.)

To aZZ whom, it may concern.-

Be itknown that I, SAMUEL E. BROWN, of Cleveland, in the county of Onyahoga and State of Ohio, have invented a certain new and useful Improved Method of Manufacturing socalled Body Loops for Carriages; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to an improved method of manufacturing so-called body-loops for carriages; and it consists, essentially, in the steps hereinafter described and claimed, the objelct being to reduce the initial cost of the wor r.

Heretofore body-loops have been forged usually by hand; but whether forged by hand or wholly or partly by the aid of a drop-press or other machinery, owing to the length of blank required and to the various forms in cross-section of the finished work, several operations were required, and consequently such work was expensive.

Vith my improved method a bar of metal of suitable form and area in cross-section is first heated and passed through reducing-rolls, the latter having grooves of such variable depth and form as will produce blanks con responding in section and in the distribution of metal so nearly with the finished work and the unfinished parts left in such small compass that the forgingis done at one operation.

In the accompanying drawings, Figure 1 is an edge view of the workafter leaving the reducing-rolls, and Fig. 2 is an end elevation in transverse section of the central or elliptical portion of this stage of the work. Fig. 3 is a view in perspective, showing the work after the forging is done. Fig. 4t is a view in perspective after the bending, showing the finished work.

A bar of metal corresponding in cross-section with the stub end A is heated and passed throughreducing-rolls. (Notshown) These rolls have variable grooves, one portion of which leaves a section of the metal bar sub stantially unchanged for a stub end, A. The next portion of the grooves is adapted to form the section B, the latter being usually, but not necessarily, elliptical in cross section.

form a flat surface on the body-loop where the latter fits onto the wooden crossbar of the carriage. The other die has a groove made to correspond with the tapering convex surface a, and has a conical depression, in which is formed the hub a,and has a teat located centrally and at the bottom of such conical depression to form the countersink a Next, the

work is placed between formers and bent substantially as shown in Fig. 4, and this completes the work. The stub end A is of such limited length that only short dies are required to do the forging. The dies are usually operated in a droppress or steam-ham mer, only a few strokes of either being required for the purpose, and the forging is done so quickly that if the blank-work has been properly heated before entering the dies it may be usually bent in the former without reheating.

With the methods heretofore employed for this class of work at least three sets of dies were required-one set, substantially as described, for reducing the part A, another set for reducing the part B, another set for forging section 0. The last two sections, owing to their length and the amount of drawing of the metal in each, required considerable time, and the work had to be reheated between each operation. WVith my improved method a metal bar long enough to produce perhaps a dozen or more pieces like that shown in Fig. 1 is passed through the rolls in much less time than is required for forging either of the sectionsB or G. The tools for carrying out my methodto wit, the rolls, dies, and formers-are not shown; but persons skilled in the artwill have no difficulty in constructing such tools from models of the work at different stages or from drawings of the same substantially as furnished herewith.

That I claim is- The herein described method of manufactur- In testimony whereof I sign this specific-w tion, in the presence of two witnesses, this 16th day of April, 1887.

ing body-loops for wagons, consisting, essen tially, in forming the middle and rectangular l sections of the iron by passing same between i reducing-rolls; second,suhjeeting thestub ends SAMUEL F. BROWN. 5 of the iron to the action of dies, and, third, W'itnesses:

bending the work to the form required for the Guns. H. DORER,

finished body-loop, snbstnntiall y as set forth. Ami'nmr E. LYNon. 

